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2CSR253001R1255 ABB DS203 AC-B25/0.03 RCBO 3P Type AC 25A 30mA 6kA
ABB DS203 AC-B25/0.03 is a three-pole Type AC RCBO with a 25 A rated current, 30 mA residual-current sensitivity, B tripping characteristic and 6 kA short-circuit breaking capacity for three-phase commercial and industrial circuit protection.
£201.65
Why Choose the ABB DS203 AC-B25/0.03 RCBO?
The ABB DS203 AC-B25/0.03 is a three-pole Type AC residual current circuit breaker with overcurrent protection (RCBO) designed to provide combined protection against overloads, short circuits and residual earth fault currents. As part of the ABB DS200 / DSH200 RCBO range, it combines residual-current and overcurrent protection in a single DIN-rail device for three-phase commercial and industrial electrical distribution systems.
With a rated current of 25 A, a rated residual operating current of 30 mA and a 6 kA rated short-circuit breaking capacity, the DS203 AC-B25/0.03 provides coordinated protection for three-phase circuits. Its Type AC residual-current characteristic is designed to detect sinusoidal alternating residual currents, providing earth fault protection alongside thermal-magnetic protection against overloads and short circuits.
The B tripping characteristic makes this RCBO suitable for circuits with relatively low inrush currents, including appropriate resistive loads, general distribution and control circuits. Combining a 25 A current rating, 30 mA residual-current sensitivity and three-pole configuration, the DS203 AC-B25/0.03 provides compact combined protection for suitable commercial and industrial three-phase installations.
Key Advantages
- Combined residual-current, overload and short-circuit protection in one device.
- 25 A rated current suitable for three-phase commercial and industrial circuits.
- 30 mA residual-current sensitivity for additional protection against electric shock.
- Type AC residual-current detection for sinusoidal alternating residual currents.
- 6 kA rated short-circuit breaking capacity.
- B tripping characteristic suited to circuits with relatively low inrush currents.
- Three-pole configuration for three-phase electrical systems.
- DIN-rail format for straightforward integration into electrical distribution boards and control panels.
Key Features
- ABB DS200 series RCBO.
- 25 A rated current.
- 30 mA rated residual operating current.
- Type AC residual-current characteristic.
- B overcurrent tripping characteristic.
- 3-pole configuration.
- 6 kA rated short-circuit breaking capacity.
- Combined residual-current and thermal-magnetic overcurrent protection.
- Protection against sinusoidal AC residual earth fault currents.
- Integrated test function for verification of residual-current operation.
- DIN-rail mounting for modular electrical distribution systems.
- Designed for suitable commercial and industrial three-phase applications.
Reliable Three-Phase Circuit Protection
An RCBO combines the protective functions of an overcurrent circuit breaker and a residual current device in a single assembly. The ABB DS203 AC-B25/0.03 therefore protects connected three-phase circuits against overload and short-circuit currents while monitoring for sinusoidal AC residual earth fault currents.
The B characteristic is designed for circuits with comparatively low inrush currents. Together with its 25 A rating, 30 mA Type AC residual-current protection and three-pole construction, the DS203 AC-B25/0.03 provides an integrated protection solution for suitable resistive loads, distribution circuits and control applications.
Typical Applications
- Three-phase commercial electrical distribution systems.
- Industrial electrical distribution boards.
- Three-phase control and auxiliary circuits.
- Industrial control panels and switchboards.
- Resistive loads and circuits with relatively low inrush currents.
- DIN-rail installations requiring combined 25 A three-pole RCBO protection.
Technical Specifications
| Series | DS200 / DSH200 RCBO |
|---|---|
| ABB order code | 2CSR253001R1255 |
| Product type | Residual current circuit breaker with overcurrent protection (RCBO) |
| Number of poles | 3 |
| Rated current | 25 A |
| Rated residual current | 30 mA |
| Residual-current type | Type AC |
| Tripping characteristic | B |
| Rated short-circuit breaking capacity | 6 kA |
| Supply system | Three-phase AC |
| Overcurrent protection | Thermal-magnetic |
| Mounting type | DIN rail |
| Application | Commercial and industrial electrical distribution |
Frequently Asked Questions
What is the ABB DS203 AC-B25/0.03 used for?
The ABB DS203 AC-B25/0.03 provides combined protection against overloads, short circuits and sinusoidal AC residual earth fault currents in suitable three-phase commercial and industrial electrical circuits.
What is the current rating of the DS203 AC-B25/0.03?
The RCBO has a rated current of 25 A and a rated residual operating current of 30 mA.
What does the B characteristic mean?
The B tripping characteristic is designed for circuits with relatively low inrush currents and is suitable for appropriate resistive loads, general distribution and control circuits.
What residual-current type is the DS203 AC-B25/0.03?
It is a Type AC RCBO, designed to respond to sinusoidal alternating residual currents.
What is the breaking capacity of the ABB DS203 AC-B25/0.03?
The DS203 AC-B25/0.03 has a 6 kA rated short-circuit breaking capacity for suitable commercial and industrial circuit protection applications.
Trusted ABB Circuit Protection
ABB DS200 series RCBOs combine residual-current and overcurrent protection for electrical distribution systems, with the DS203 AC-B25/0.03 providing a 25 A rating, Type AC residual-current detection, B tripping characteristic and three-pole construction for suitable commercial and industrial three-phase circuits.
